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-rw-r--r--Doc/whatsnew/3.2.rst4
1 files changed, 3 insertions, 1 deletions
diff --git a/Doc/whatsnew/3.2.rst b/Doc/whatsnew/3.2.rst
index 2ec93d2bb2..bf65545cc9 100644
--- a/Doc/whatsnew/3.2.rst
+++ b/Doc/whatsnew/3.2.rst
@@ -242,7 +242,9 @@ Filenames and unicode
The filesystem encoding can be specified by setting the
:envvar:`PYTHONFSENCODING` environment variable before running the interpreter.
-The value should be a string in the form ``<encoding>``, e.g. ``utf-8``.
+The value is an encoding name, e.g. ``iso-8859-1``. This variable is not
+available (ignored) on Windows and Mac OS X: the filesystem encoding is pinned
+to ``'mbcs'`` on Windows and ``'utf-8'`` on Mac OS X.
The :mod:`os` module has two new functions: :func:`os.fsencode` and
:func:`os.fsdecode`.